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Finding the Fourth Proportional to 2,912.32, 4,019.16 and 1,670.32

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Solution

The fourth proportional to 2,912.32, 4,019.16 and 1,670.32 is: 2,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.32 : 4,019.16 = 1,670.32 : x
  2. Step 2: Convert to fraction form
    2,912.32/4,019.16 = 1,670.32/x
  3. Step 3: Cross multiply
    2,912.32x = 4,019.16 × 1,670.32
  4. Step 4: Simplify right side
    2,912.32x = 6,713,283.33
  5. Step 5: Solve for x
    x = 6,713,283.33/2,912.32
  6. Step 6: Final answer
    x = 2,305.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.